hg: build-infra/jdk8: Fixed building without javac server.

[erik.joelsson at oracle.com]

Changeset: c7bb6ec52b06
Author:    erikj
Date:      2012-03-06 10:39 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/c7bb6ec52b06

Fixed building without javac server.

! common/makefiles/JavaCompilation.gmk